Charging and discharging characterization of a novel combined sensible-latent heat thermal energy storage system by experimental investigations for medium temperature applications

New Advances in Materials, Applications, and Design Optimization of Thermocline Heat Storage: Comprehensive Review

“…Decreasing particle size reduces the thickness of the thermocline zone, reducing charging time [138] and increasing effective discharge time [139]. For cross-packing, reducing particle size Zahid et al introduced a structured hybrid sensible-latent THS tank, consisting of upper and lower layers of copper pipe-encapsulated PCMs, separated by structured concrete blocks [57]. Experimental comparisons were made among four configurations of THS tanks: multi-layered sensible heat concrete with PCMs (MLSPCM), two uni-layered sensible concrete with PCMs (SLSPCM-1 and SLSPCM-2), and single sensible heat concrete block (SSCB), demonstrating that the MLSPCM configuration has the highest energy storage capacity and charging-discharging efficiency.…”

“…Numerous studies have investigated the influence of flow velocity on THS systems. An increase in flow velocity often causes an augmentation in thermocline thickness, thermal stratification degradation, and the percentage of thickness increase can reach 228% [20,57,97,138]. However, the impact of flow velocity on the efficiency of THS systems is complex and varies according to the type of THS system.…”

“…In cascaded THS tanks, an increase in flow velocity results in decreased charging time and exergy efficiency [129]. In hybrid sensible-latent THS tanks, an increase in flow velocity can enhance the heat transfer rate, improving charging and discharging efficiency but reducing effective discharging time [57].…”

“…Latent TESMs exhibit higher thermal storage capacities and stable working temperatures but are relatively expensive with lower thermal conductivity [53]. Various methods have been developed to enhance the thermal conductivity of PCMs, such as mixing with high thermal conductivity nanoparticles [54], incorporating thermally conductive metals into PCMs [55], encapsulating PCMs in microcapsules [56], and installing fins on PCM tubes [57]. Microencapsulated PCMs are also effective in preventing PCM leakage and corrosion [56].…”

Numerical Study on Phase Change Material with Metal Foam in Shell and Convergent/Divergent Tube Thermal Energy Storage Systems with External Heat Losses

“…In their experimental study of a novel group of combined sensible-latent heat configurations for medium temperature, Zahid et al [14] published their findings. The objective of the research was to suggest a more cost-effective and highly heat efficient TES technology.…”